Depends on the fight, championship.
The gladiator fights were held in the afternoons and lasted until the set number of fighters performed. There was no set time for them to end.
The fight between Cain Velasquez and Junior Dos Santos was held in the UFC event - UFC 155 that happened on 29th December 2012. The fight was the main event of the night and was for the UFC heavyweight championship Jr. Dos Santos was the champion heading into the fight and Cain Velasquez was the no.1 contender. The fight lasted a full 5 rounds in which Cain Velasquez was declared the winner by "Unanimous Decision"
The longest fight in history took place in Brazil on May 24, 1955. It was between Helio Gracie, 43, the creator of Gracie Jiu-jitsu and Waldemar Santana, 25, a former student. It lasted for 3 hours and 40 minutes.
Casanovas
The Way It Was - 1974 The September 26 1951 Featherweight Championship Fight was released on: USA: 27 February 1977
Judges can make anywhere from $1,000 for a smaller fight and up to $8,000 for a high-profile fight.
john cena and triple h
Fight 20 BATTLES
The length of the show varies extremely. There's anywhere between 8 and 11 fights on Overall fight card itself. Each fight could last 8 seconds, or 15 minutes (for non-title fights) or 25 minutes (for titles fights), plus intro music and time for fighters to exit the ring.
World's Heavyweight Championship Fight Joe Louis vs- Abe Simon - 1942 was released on: USA: 1942
World's Heavyweight Championship Fight Ingemar Johansson Versus Floyd Patterson - 1960 was released on: USA: 1960